diff --git a/modules/shell/git.nix b/modules/shell/git.nix
index 9e6acd1..c3cf983 100644
--- a/modules/shell/git.nix
+++ b/modules/shell/git.nix
@@ -1,6 +1,7 @@
 #
 # Git
 #
+{ user, ... }:
 
 {
   programs = {
@@ -10,9 +11,9 @@
       userEmail = "tobias@opel-online.de";
       lfs.enable = true;
       signing = {
-        key = ~/.ssh/id_ed25519_sk_yubi_C;
-        signByDefault = true;
-      }
+        key = "/home/${user}/.ssh/id_ed25519_sk_rk_yubiC";
+        signByDefault = false;
+      };
     };
   };
 }